Chimney or smoke-stack top



(No Model.)

3. O. STREBY. CHIMNEY OR SMOKE STAGK TOP.

No. 579,308. Patented Mar. 23, 1897.

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CHIMNEY OR SMOKE-=STACK TOP.

SPECIFICATION forming part of Letters Patent No. 579,308, dated March23, 1897.

Application filed March 1'7, 1896. Serial No. 583,628. (No model.)

To all whom, it may concern:

Be it known that I, SAMUEL O. STREBY, residing at Upper Sandusky, in thecounty of I'Vyandot, State of Ohio, have invented certain new and usefulImprovements in Chimney-Tops or SmokeSt-ack Tops; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to chimney-tops and smoke'stack tops in general,and-more particularly to that class adapted to prevent downdrafts andsparking.

In the drawings forming part of this specification, and in which likenumerals refer to similar parts in both views, Figure 1 is alongitudinal section of my preferred construction, and Fig. 2 is asimilar View of a variation.

Referring now to the drawings, more particularly to Fig. 1, this form isparticularly adapted for masonry chimneys,and is adapted to be placed onthe top thereof, in which position it is to be rigidly secured. In thisconstruction 5 represents a. smoke-pipe having an outwardly-extendingannular flange 6 at its base, which lies in direct contact with theupper surface of the chimney. Extending upwardly from the rim of thisflange is a foraminous wall 7, which may be provided at its upper edgewith a strengthening rim or bead 8. Supported above the pipe 5 andconcentric therewith is an inverted cup 9, formed, preferably, of sheetmetal, whose rim depends to a point below the upper edge of the pipe 5,the diameter of said cup being approximately that of the flange 6. Thesupporting means for the cup 9 may be standards 10, riveted or otherwisesecured thereto and to the pipe 5. In order to secure this device to achimney, it may be provided with metallic strips 11, secured to theflange 6 and provided with perforations for the insertion of nails,though, as will be readily appreciated, any other means may be employed.It will be readily understood that this form of my device is equallyapplicable to the top of a metallic smoke-stack, in which case it isslipped over the top of the stack and maybe held in the proper positionby means of a bead on the latter.

Referring now to Fig. 2, represents a smoke-pipe, to which is secured byrivets or other desired means an outwardly-extending annular sieve orscreen 16, provided at its outer periphery with an upwardly-turned bead17 and at its inner periphery with a second bead 18, forming means forthe said attachment to the smoke-pipe, Supported by means of standards19, secured to the upper edge of the smoke-pipe, is an inverted cup 20,similar in form and arrangement to the cup 9, its lower edge extendingbelow the upper edge of the smoke-pipe and having a diameterapproximately that of the sieve 16, including its bead 17. If desired, acup of this form may be employed in connection with the usual masonrychimney, the pipe 15 being formed about the length of the usual sectionof stove-pipe and beinginserted in the chimney and packed securelyaround with cement or other suitable material.

The operation of both forms of my invention are quite similar. .Thearrangement of the invertedcup has been found to prevent all downdraft,while the heat, air, and gases rising through the smoke-pipe are forceddownwardly against the flange 6 in the constrnetion in Fig. 1, and thenpassed upwardly and out between the bead 8 and the rim of the cup, atthe same time depositing any sparks upon the said flange, the latterbeing prevented from blowing by the screen 7. WVhen there is no pressureupon the soot remains of the sparks due to action of the heated air andgases, the soot and einders are readily acted upon by wind and are blownfrom their receptacle. Such matter as is too heavy, or which for anyother reason fails to be dislodged by the wind, maybe taken out by hand.

The operation of the construction shown in Fig. 2, as before intimated,is very similar to that just described, the principal differonce beingthat the arrangement of the sieve and the lowness of the surroundingwall formed by the bead 17 allows deposits to be more readily dislodgedby the wind.

It will be seen that my construction morcever absolutely preventsingress of rain or snow, and it will be readily understood that I mayvary the particular construction and arrangement heretofore mentionedwithout departing in any manner from the spirit of smoke-pipe andadapted to direct the draft 1' my invention. therefrom against saidflange.

Having now described my invention, what In testimony whereof I affix mysignature I claim is in presence of two Witnesses. 5 A device of theclass described comprising SAMUEL O STREBY a smoke-pipe, provided withan annular ontvvardly-extending flange, a foranlinous Wail Witnesses:extending upwardly from the outer edge of W. R. HARE, the flange and acup supported above the O. B. HARE.

